In alcune delle seguenti frasi può essere usato indifferentemente sia could sia was/were able to. In altre, invece, è accettabile solo was/were able. Scegliete l'alternativa corretta.
The police were suspicious at first but I . . . convince them that we were innocent
could
was able to
both (entrambe corrette)
When the garage had repaired our car we . . . continue our journey.
could
were able to
both (entrambe corrette)
He was very strong; he . . . ski all day and dance all night.
could
was able to
both (entrambe corrette)
. . . you walk or did they have to carry you?
were you able to
could you
both (entrambe corrette)
At five years old he . . . read quite well.
could
was able to
both (entrambe corrette)
I had no key so I . . . lock the door.
couldn't
wasn't able to
both (entrambe corrette)
The swimmer was very tired but he . . . reach the shore before he collapsed.
could
was able to
both (entrambe corrette)
I knew the town so I . . . advise him where to go.
could
was able to
both (entrambe corrette)
When I arrived everyone was asleep. Fortunately I . . . wake my sister and she let me in.
could
was able to
both (entrambe corrette)
I was a long way from the stage. I . . . see all right but I . . . hear very well.
grazie
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